The letter goes on to say that Wynne is not on trial or even under investigation, but is rather offering voluntary testimony and co-operating with the court process.

It also demands Brown retract and apologize for the remarks just as another Conservative member of the provincial legislature — Bill Walker — did last week after being issued a similar legal notice.

Walker told a local radio station Wynne was under investigation and facing charges in connection with the bribery trial. Days later, he went back on the air to correct the statement and apologize for the remarks.

Brown's office did not contest the leader's remarks, but said he immediately tried to clarify them when speaking to the media. A more detailed response from Brown is expected later today.

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